Cotter-pin extractor



E. F. |VE$- COTTER PIN EXTRACTOR.

APPLICATION FILED NOV. 28. 1921.

1,438,647. Patented Dec. 12, 1922.

Pat nted Dec. l2, i922.

nnwrn FRANCIS IVES, OF WALLINGEORD, CDITNECTIDU'I.

CUTTER-PIN EXTRACT-0R.

Application filed November 28, 1921. Serial No. 518,408.

T 0 all 107mm it may concern Be it known that I, EowiN FRANCIS Ives, acitizen of the United States, residing at Walling'ford, in the county ofNew Haven and State of Connecticut, have invented a new and usefulImprovement in Cotter-Pin Extractors; and I do hereby declare thefollowing, when taken in connection with the accompanying drawings, andthe characters This invention relates to improvement in cotter-pinextractors, and particularly to extractors of the plier type. The obqectof this invention is to produce a cotter-pin extractor containing initself duplicate parts, whereby the life of the tool is prolonged andproviding a device by which cotter-pins may be firmly gripped andreadily removed, and the invention consists in the construc tion ashereinafter described and particularly recited in the claims.

In carrying out my invention. I employ two handle-niembers ill) and 11.These are struck up from sheet-metal and are U shaped in cross-section,and in the folded edges each is :lormed with a series or? notches 12,Which provide a firm grip for the hand and fingers. fit their outer ents, these handles are provided with curved bearing surfaces 13 adapted torock one upon the other. lvlounted in the outer end of one of thehandles are two fulcrum-plates 1i and 15 secured by a bolt 16. Theseinlcrum-plates are curved at their ends to form fulcrum-points 17.Mounted in the outer end 01 the other handle 11 is a pulling-plate 18 ona bolt 19, this plate being in the form of a bell-crank lever, one arm20 being in the form of a pulling-hook, which may pass between thefulcrum-plates 14 and 15, the other arm 21. extending dowf.

ward between the fulcrum-plates l4 and 15, where it is held in place bythe bolt 16, and serves to properly space the fulcrumplates, so that thehook 20 may pass between their outer ends. The plate is also formed withan arm 22, to which a spring 23 is attached, the other end or the springbeing fixed to a bolt 24 extending through the handle 11. Mounted uponbolt 25., which passes through the outer end of the handle 10 andthrough the fulcrum-plates 14 and 15, and on each side oi the handle,are'plates 26 and EL-duplicates of the plate 18, these platesbeingconnected to the opposite sides of the handle 11 by the bolt 24.

The tendency of the spring 23 is to separate the handles and. pass thehook 520 be tween the outer ends of the fulcrum-plates ii and 15, and inposition to be inserted into the eye of a cotter-pin, the points 17 otthefulcrum-plate providing a fulcrum orbearing, so that, when thehandles are brought together, the downward movement of the hoolr withrespect to the tulcrnms will extract a cotter-pin. It will be noted thatthe handles are so proportioned that their ends rock one upon the other,thus removing the strains which might be imposed upon a pivot if thehandles were pivoted together.

By forming the handles with the notches 152, a firm grip is secured, andin case either of the tulwunrpoints break or become worn away, thosefulcrum-plates l-land 1;") may be reversed side for side. or end forend. as each plate has four fulcrum-points. The hook 20 of the plate 18is a part most liable to become bent or broken, and this plate 18 may beext-hinged with either of the plates or 27,-thus three hooks areprovided.

I, therefore, not only produce a tool specially designed for the purposeof extracting cotter-pins, but provide that tool with interchangeablerenewable parts. This tool also becomes a combination tool, as a smallnut or bar may be gripped between the edges 28 oi the handle 10, and thehooks of the plates 26 and 27; or a tube or rod may be gripped betweenthe hooks 20 of the plates 26 and 27 and the edges 29 of: the handle 11,as there is a slight rocking movement of the plates Q6 and 27 withrespect to the handle 11, which will be suiiicient to grip an article,or a tube or rod supported by the mounted between the sides of onehandlemember, a hook-plate mounted between the sides of the otherhandle-member, said hookplate provided with a hook and with an armextending downward between the said fulcrum-plates, plates arranged onopposite sides of the handle-members and connecting their outer ends,and a spring connected with a hookplate and with the handlemember inwhich it is mounted.

3. A cotter-pin extractor, comprising two handle-members formed fromsheet-metal, U-sl1aped in cross-section and formed with notches in theirouter edges, fulcrum-plates mounted in the outer end of one of thehandle-members, a hook-plate mounted in the outer end of the otherhandle-member, said hook-plate coinprising a hook and an arm extendingdownward into engagement with the other handle-member, and platescorrespondingto the hook-plate connecting the v said two handle-members.

In testimony whereof, I have signedthis speclfication 1n the presence oftwo subscribing witnesses.

E. FRANCIS IVES.

Witnesses:

FREDnRIo C. EARLE, MALCOLM P. NICHOLS.

